Reimplement stack manipulations for LiveEdit

src/frames.cc

Index: src/frames.cc
diff --git a/src/frames.cc b/src/frames.cc
index 67a20d3cb8d87601e256d21098ac7adb1de7e7fd..907308ecaad1ea36ed7751befa3c44317ffd7122 100644
--- a/src/frames.cc
+++ b/src/frames.cc
@@ -32,6 +32,7 @@
 #include "scopeinfo.h"
 #include "string-stream.h"
 #include "top.h"
+#include "liveedit.h"
 
 namespace v8 {
 namespace internal {
@@ -558,10 +559,18 @@ void JavaScriptFrame::Print(StringStream* accumulator,
 
   accumulator->Add("(this=%o", receiver);
 
+  FunctionScopeState scope_state;
+  if (LiveEdit::IsAtFrameResetPatch(this)) {
+    scope_state = FUNCTION_SCOPE_NOT_ENTERED;
+    accumulator->Add(",<no locals -- function is at restarter patch>");
+  } else {
+    scope_state = FUNCTION_SCOPE_NORMAL;
+  }
+
   // Get scope information for nicer output, if possible. If code is
   // NULL, or doesn't contain scope info, info will return 0 for the
   // number of parameters, stack slots, or context slots.
-  ScopeInfo<PreallocatedStorage> info(code);
+  ScopeInfo<PreallocatedStorage> info(code, scope_state);
 
   // Print the parameters.
   int parameters_count = ComputeParametersCount();
@@ -720,6 +729,12 @@ void StandardFrame::IterateExpressions(ObjectVisitor* v) const {
 }
 
 
+void StandardFrame::SetContext(Context* context) {
+  const int offset = StandardFrameConstants::kContextOffset;
+  Memory::Object_at(fp() + offset) = context;
+}
+
+
 void JavaScriptFrame::Iterate(ObjectVisitor* v) const {
   IterateExpressions(v);
 
@@ -819,5 +834,17 @@ Vector<StackFrame*> CreateStackMap() {
   return list.ToVector();
 }
 
+int GetStackFrameObjectSize(StackFrame* frame) {
+#define FRAME_TYPE_CASE(type, field) \
+  case StackFrame::type: return sizeof(field);
+
+  switch (frame->type()) {
+    STACK_FRAME_TYPE_LIST(FRAME_TYPE_CASE)
+    default: UNREACHABLE();
+  }
+#undef FRAME_TYPE_CASE
+  return 0;
+}
+
 
 } }  // namespace v8::internal